//package com.yuwubao.uav.tool.datasource;
//
//import java.lang.annotation.ElementType;
//import java.lang.annotation.Retention;
//import java.lang.annotation.RetentionPolicy;
//import java.lang.annotation.Target;
//
//@Retention(RetentionPolicy.RUNTIME)
//@Target({ElementType.METHOD})
//public @interface DS {
//    String value() default "ds";
//}